Refrigerator



(No Model.)

W. R. MGNROE. REFRIGERATOR.

No. 405,492. Patented June 18, 1889.

c a ME f E w a Q E V N E Q) E 1? 2 "F F E L L E I c n c E c c E E E E E E E E E k F F I'\ h 1 a: 11 -4 y q x .E l u.

Q R O WITNESSES. I 'INVENTEIR.

UNITED STATES PATENT OFFICE.

IVILLIAM R MONROE, OF CLEVELAND, OHIO.

REFRIGERATOR.

SPECIFICATION forming part of Letters Patent No. 405,492, dated June 18, 1889. Application filed January 23, 1889. Serial No. 297,235. (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM R. MONROE, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Refrigerators, of which the following is a full, clear, and exactdescription,reference being had to the accompanying drawings, in which Figure 1 is a perspective view of my improved refrigerator with the front side and part of the top removed. Fig. 2 is a central Vertical sectional view of a refrigerator in which the pipe D is arranged ina slightlydifferent position from that shown in Fig. 1.

The object of my invention is to so construct a refrigerator that the greatest possible amount of refrigeration may be obtained in the preserving-chamber from the employment of a given quantity of ice, and whereby the rise in the temperature occasioned by the opening of the doors of the preserving-chamber may be overcome quickly when said doors are closed 5 and the invention consists in the construction, combination, and arrangement of the parts herein shown and described, as pointed out in the claim.

Referring to the drawings, A represents the refrigeratoncase, the walls of which are constructed in any manner adapted to prevent the outside temperature from affecting materially the temperature within. At one side of the case the ice-box B is separated from the preserving-chamber O by a partition I), and a slot 0 through the upper part of this partition admits the air from the preserving-chamber to the ice-box. The ice-box is provided with an inclined bottom, substantially as shown, and a rack F, upon which the ice rests, is fixed in said ice-box near its lower end. Below the ice-box a partition 6 separates from the preserving chamber a chamber E, in which cold air is confined. A pipe D connects with the ice-box at its lowest point and extends downward through the cold-air chamber E, and serves the double purpose of a drip-pipe and a circulating airduct. The lower end of this pipe is reduced in size, as shown, and is provided with asuitable valve G, which permits the water to escape, but prevents the entrance of the air.

Just above the point where the reduction in the size of the pipe D begins said pipe is connected with the lower part of the preserving-chamber by the pipe (Z or its equivalent.

The mode of operation of the above-described refrigerator is as follows: The air from the preserving-chamber enters the icebox through the slot 0 and circulates around in contact with the ice, by which it is cooled and the foul vapors condensed. The cooled and purified air falls downward and is deflected by the inclined walls at the lower part of the ice-box to the pipe D, through which it passes with considerable rapidity, and is discharged into the lower part of the refrigeratiugchamber. This cool air then passes upward, driving before it the warmer air in the preserving-chamber. The cold drip from the melted ice passes down through the pipe D, from whence it escapes through the valve in the bottom. In passing down through said pipe in contact with the walls thereof it cools said walls, whereby the circulating air is still further cooled by contact therewith, and whereby the air inclosed within the cold-air chamber 0 is also cooled and kept cool.

IVhen the door of the preserving-chamber is opened, the temperature of the air therein, and consequently of the air within the pipe D, is sensibly raised; but the temperature of the air within the inclosed chamber 0 is not affected thereby. Therefore, when the refrigerator doors are closed, the air in the chamber 0 tends to cool the walls of the pipe D, which in turn cools the air circulating through it, whereby the temperature of the said circulating air is quickly reduced.

If desired, the pipe D may be arranged, as shown in Fig. 2, so that it is not entirely surrounded by the air in the chamber E. In this case the influence of the cold air within the chamber E in cooling the pipe D and air passing through it will be to some extent lessened. The form shown in the first figures is, however, believed to be the most complete and satisfactory.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is I In a refrigerator, the combination of apreserving-chamber and an ice-box with a perpreserving-chamber, substantially as and for inanently-inclosed chamber beneath said icethe purpose specified. box, and a combined drip-pipe and air-duct which connects with the ice-box and passes MONROE 5 through said inclosed chamber out through NVitnesses:

the bottorn of the refrigerator, and which has E. L. THURSTON,

a passage through its side connected with the FRANK MILLER. 

